<template>
   <!-- 三级分类全局组件 -->
    <Category :scene="scene"></Category>
    <el-card style="margin: 10px 0;">
        <div v-show="scene==0">
            <el-button @click="addAttr" type="primary" icon="Plus" :disabled="categoryStore.c3Id?false:true">添加属性</el-button>
            <el-table border style="margin: 10px 0;" :data="attrArr">
                <el-table-column label="序号" type="index" align="center" width="80px"></el-table-column>
                <el-table-column label="属性名称" width="120px" align="center" prop="attrName"></el-table-column>
                <el-table-column label="属性值名称" align="center">
                    <template #="{row,$index}">
                        <el-tag style="margin: 5px ;" v-for="(item,index) in row.attrValueList" :key="item.id">{{item.valueName}}</el-tag>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="120px" align="center">
                    <template #="{row,$index}">
                        <el-button type="primary" size="small" icon="Edit" @click="updateAttr(row)"></el-button>
                        <el-popconfirm title="确认删除？" width="200px" @confirm="deleteAttr(row.id)">
                            <template #reference>
                            <el-button type="primary" size="small" icon="Delete" ></el-button>
                            </template>
                        </el-popconfirm>
                    </template>
                </el-table-column>
            </el-table>
        </div>
        <div v-show="scene==1">
            
            <!-- 展示添加属性与修改属性的结构 -->
            <el-form :inline="true">
                <el-form-item label="属性名称">
                    <el-input placeholder="请输入属性名称" v-model="attrParams.attrName"></el-input>
                </el-form-item>
            </el-form>
            <el-button @click="addAttrValue" :disabled="attrParams.attrName?false:true" type="primary" size="default" icon="Plus">添加属性值</el-button>
            <el-button type="primary" size="default" @click="cancel">取消</el-button>
            <el-table border style="margin: 10px 0;" :data="attrParams.attrValueList">
                <el-table-column width="80px" type="index" align="center" label="序号"></el-table-column>
                <el-table-column label="属性值名称">
                    <template #="{row,$index}">
                        <el-input :ref="(vc:any)=>inputArr[$index]=vc" @blur="toLook(row,$index)" v-if="row.flag" placeholder="请输入属性值名称" v-model="row.valueName" size="small"></el-input>
                        <div v-else @click="toEdit(row,$index)">{{ row.valueName }}</div>
                    </template>
                </el-table-column>
                <el-table-column label="操作">
                    <template #="{row,$index}">
                        <el-button type="primary" size="small" icon="Delete" @click="attrParams.attrValueList.splice($index,1)"></el-button>
                    </template>
                </el-table-column>
            </el-table>
            <el-button type="primary" size="default" @click="save" :disabled="attrParams.attrValueList.length>0?false:true">保存</el-button>
            <el-button type="primary" size="default" @click="cancel">取消</el-button>
        </div>
    </el-card>
</template>
<script setup lang="ts">
import { watch ,ref,reactive,nextTick,onBeforeUnmount} from 'vue';
import { reqAttr,reqAddOrUpdateAttr,reqRemoveAttr } from '@/api/product/attr';
//获取分类仓库
import useCategoryStore from '@/store/modules/category';
import { AttrResponseData ,Attr,AttrValue} from '@/api/product/attr/type';
import { ElMessage } from 'element-plus';
let categoryStore=useCategoryStore();
//存储已有的属性与属性值
let attrArr=ref<Attr[]>([]);
//定义卡片组件内容的切换
let scene =ref(0);//scene=0显示table,否则展示添加与修改属性结构
//收集新增的属性的数据
let attrParams=reactive<Attr>({
    attrName: '',
    attrValueList: [],
    categoryId: '',
    categoryLevel: 3,
})
//准备一个数组将来存储对应的组件实例
let inputArr=ref<any>([]);




//路由组件销毁时,把仓库相关的数据清空
onBeforeUnmount(()=>{
    //清空分类仓库的数据
    categoryStore.$reset();
})



//监听仓库三级分类ID变化
watch(()=>categoryStore.c3Id,async ()=>{
    if(!categoryStore.c3Id){
        return;
    }
    getAttr();
    
})
//获取已有的属性与属性值方法
const getAttr= async()=>{
    const {c1Id,c2Id,c3Id}=categoryStore;
    let result:AttrResponseData= await reqAttr(c1Id,c2Id,c3Id);
    console.log("属性和属性值数据")
    console.log(result);
    if(result.code==200){
        attrArr.value=result.data;
    }
}

//添加属性按钮的回调
const addAttr=()=>{
    //每一次点击的时候先清空数据在收集数据
    Object.assign(attrParams,{
        attrName: '',
        attrValueList: [],
        categoryId: '',
        categoryLevel: 3,
    })


    //切换为添加与修改属性的结构
    scene.value=1;
    //收集新增属性的三级分类的id
    attrParams.categoryId=categoryStore.c3Id;
    
}

//修改已有属性按钮的回调
const updateAttr=(row:Attr)=>{

    scene.value=1;
    //将已有的属性对象赋值给attrParams
    Object.assign(attrParams,JSON.parse(JSON.stringify(row)));
}

//取消按钮的回调
const cancel=()=>{
    scene.value=0;
}

//添加属性值按钮的回调
const addAttrValue=()=>{
    //点击添加属性值按钮的时候，向数组添加一个属性值对象
    attrParams.attrValueList.push({
        valueName: '',
        flag:true,//控制每一个属性值的编辑模式的切换
    })
    //获取最后的el-input组件聚焦
    nextTick(()=>{
        inputArr.value[attrParams.attrValueList.length-1].focus();
    })
}

//保存按钮的回调
const save=async ()=>{
    //收集参数
    //发请求
    let result= await reqAddOrUpdateAttr(attrParams);
    console.log("添加或修改属性");
    console.log(result);
    if(result.code==200){
        scene.value=0;
        //提示信息
        ElMessage({
            type: 'success',
            message: attrParams.id?'修改成功':'添加成功'
        })
        //获取全部已有的属性与属性值
        getAttr();
    }
    else{
        ElMessage({
            type: 'error',
            message: attrParams.id?'修改失败':'添加失败'
        })
    }
    
}
//属性值表单元素失去焦点
const toLook=(row:AttrValue,$index:number)=>{
    //删除掉对应属性值为空
    
    //非法情况判断
    if(row.valueName.trim()==''){
        attrParams.attrValueList.splice($index,1);
        ElMessage.error("属性值不能为空");
        return;
    }
    let repeat= attrParams.attrValueList.some((item)=>{
        if(item!=row){
            return item.valueName === row.valueName
        }
    });
    console.log(repeat);
    if(repeat){
        ElMessage.error("属性值不能重复");
        attrParams.attrValueList.splice($index,1);
        return;
    }
    row.flag=false;
}
const toEdit=(row:AttrValue,$index:number)=>{
    row.flag=true;
    //nextTick响应式数据发生变化，获取更新后的DOM
    nextTick(()=>{
        inputArr.value[$index].focus();
    })
}

//删除已有的属性方法回调
const deleteAttr=async (attrId:number)=>{
    //发删除请求
    let result=await reqRemoveAttr(attrId);
    if(result.code==200){
        ElMessage.success("删除成功");
        getAttr();
    }
    else{
        ElMessage.error("删除失败");
    }
}

</script>
<style scoped>

</style>